<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<body>
<div style="width:300px">
	<div id="A" style="float:left; border:1px solid #000066;">
	    <div style="background-color:#999999; margin:2px; zoom:1">abc</div>
	</div>
	<br />
	<div id="B" style="position:absolute; top:50px; border:1px solid #000066;">
	    <div style="background-color:#999999; margin:2px; zoom:1">abc</div>
	</div>
</div>
</body>
</html>